How prepayment meter is developing and iterating?
Prepayment is an indispensable mode in the type of electricity meter. Prepayment meter , pay as you go, first paying to purchase electricity and then using electricity. Effectively solves the problem of difficult charging and deeply loved by power generation enterprises and power operators.
In Africa and Southeast Asia, the problem of difficult electricity charging is very prominent, basically using prepayment meters, and unifying the highly safe standard STS standard. At the level of the government power bureau, the use of smart prepaid energy meters in China is relatively small, and it has become a downward trend year by year.
In African countries, BS keyboard single-phase prepaid meters and BS keyboard three-phase prepayment meters are used, and China's smart prepaid energy meter are mainly IC card-type smart prepaid energy meters. From the birth of the card smart prepaid meter, it has undergone many upgrades and iterations.
China's smart prepaid energy meters have entered multiple stages of development, and the earliest use of electric key IC cards is not high, there is a risk of cracking, and it is mainly used in property communities. In 1995, the security of telephone IC cards and logic encryption cards (4442\4428) was greatly improved, and the scope of use was expanded to power management departments. Around 2000, it was upgraded to a financial-grade IC card, that is, a CPU card, embedded chip and ESAM encryption module, and the security was further improved and promoted nationwide.
In addition to the use of power bureaus, China's smart prepaid energy meters are also used in the secondary market, such as rental housing, market shops, school dormitories, factory dormitories, etc. In the secondary market, it is mainly based on din-rail single-phase prepayment meters and din-rail three-phase prepayment meters, giving full play to the advantages of small size and convenient installation of DIN rail meters. In terms of data security, AES encryption is generally adopted, and STS encryption is rarely used. Data collection and power recharge through communication. With the development of communication technology, feedback on actual on-site use effects, cost factors of communication methods and installation convenience, etc., the communication methods of prepaid meters in the secondary market are constantly iterating and optimized; RS485, WiFi, LoRa, PLC, 2G, NB-IoT, CAT1 (4G) these communication methods have certain applications, so far the market according to the installation environment is basically RS485, WiFi, 4G three communication methods.
With the rapid development of China's urbanization construction, the commercial market and housing rental market have been vigorously developed, and the scale of China's prepaid electricity meter market is growing day by day. According to the needs of market development, the functions of prepaid meters are also increasing, and they are developing in the direction of intelligence, data and systematization. The emergence of digital prepaid electricity meter system solutions has solved the various needs of rental housing and tenants, and also promoted the application and penetration of prepaid electricity meters in the secondary market.
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